Magnitude 2.8 - 32 miles NE of Kobuk
November 18, 2023 03:08:26 AKST (November 18, 2023 12:08:26 UTC)
67.3226°N 156.3953°W Depth 0.0 miles (0 km)
This event has not been reviewed by a seismologist
- 36 miles (58 km) NE of Shungnak
- 42 miles (68 km) NE of Ambler
- 106 miles (171 km) NW of Hughes
- 110 miles (178 km) NE of Selawik
- 111 miles (179 km) E of Kiana
- 113 miles (183 km) N of Huslia
- 114 miles (184 km) NW of Allakaket
- 129 miles (209 km) E of Noorvik
- 130 miles (210 km) W of Bettles
- 134 miles (217 km) SW of Anaktuvuk Pass
- 148 miles (239 km) NE of Buckland
- 297 miles (481 km) NW of Fairbanks
- Magnitude type: Ml2
- Event type: earthquake
Tectonic Setting of the Brooks Range
Seismicity in the Brooks Range is characterized by intraplate earthquakes associated with mountain building and crustal reorganization. A broad earthquake band extends from northeast of the Brooks Range toward the Beaufort Sea. Earthquake source mechanisms comprise a mixture of strike-slip and normal faulting events, indicative of north-northwest compression and northeast extension. A magnitude 6.4 earthquake on August 12, 2018 located 43 miles (69 km) south of Kaktovik was the largest earthquake ever recorded north of the Brooks Range. It produced an energetic aftershock sequence that continues to this day. In 2019, a vigorous swarm sequence began in the Purcell Mountains. More than 9,000 earthquakes have been recorded as part of this swarm through the end of 2021, including five earthquakes with magnitudes larger than 5. At present, this swarm continues, though at a decreased activity level.
